/* ===== RESPONSIVE DESIGN STYLES ===== */

/* ===== MOBILE FIRST APPROACH ===== */

/* Extra Small Devices (phones, 0px and up) */
@media (max-width: 575.98px) {
    :root {
        --spacing-xs: 0.2rem;
        --spacing-sm: 0.4rem;
        --spacing-md: 0.8rem;
        --spacing-lg: 1.2rem;
        --spacing-xl: 1.6rem;
        --spacing-2xl: 2rem;
        
        --font-size-xs: 0.7rem;
        --font-size-sm: 0.8rem;
        --font-size-base: 0.9rem;
        --font-size-lg: 1rem;
        --font-size-xl: 1.1rem;
        --font-size-2xl: 1.3rem;
        --font-size-3xl: 1.6rem;
        --font-size-4xl: 2rem;
    }
    
    /* Header adjustments */
    .header-content {
        padding: 0 var(--spacing-md);
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .app-title {
        font-size: var(--font-size-xl);
    }
    
    .header-nav {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .nav-btn {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-xs);
        min-width: auto;
    }
    
    .nav-btn .icon {
        font-size: var(--font-size-sm);
    }
    
    /* Game screen layout */
    .game-screen {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr auto auto;
        grid-template-areas: 
            "story"
            "character"
            "controls";
        padding: var(--spacing-md);
        gap: var(--spacing-md);
    }
    
    /* Story section */
    .story-section {
        padding: var(--spacing-lg);
    }
    
    .story-display {
        max-height: 40vh;
        font-size: var(--font-size-base);
    }
    
    .story-content {
        font-size: var(--font-size-base);
        line-height: 1.6;
    }
    
    /* Character status panel */
    .character-status {
        position: static;
        padding: var(--spacing-lg);
        height: auto;
    }
    
    .status-header {
        margin-bottom: var(--spacing-md);
    }
    
    .status-header h3 {
        font-size: var(--font-size-lg);
    }
    
    .stats-summary {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-xs);
    }
    
    .stat-item {
        padding: var(--spacing-xs);
    }
    
    .stat-value {
        font-size: var(--font-size-base);
    }
    
    /* Controls section */
    .controls-section {
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
    }
    
    /* Dice container */
    .dice-container {
        margin-bottom: var(--spacing-md);
    }
    
    .dice-display {
        min-height: 80px;
    }
    
    .dice-selection {
        gap: var(--spacing-xs);
        justify-content: center;
    }
    
    .dice-btn {
        padding: var(--spacing-xs) var(--spacing-sm);
        min-width: 40px;
        font-size: var(--font-size-sm);
    }
    
    /* Action buttons */
    .action-buttons {
        gap: var(--spacing-xs);
    }
    
    .action-btn {
        padding: var(--spacing-sm);
        font-size: var(--font-size-sm);
    }
    
    /* Input section */
    .input-container {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .player-input {
        min-height: 60px;
        font-size: var(--font-size-sm);
    }
    
    .submit-btn {
        align-self: stretch;
        padding: var(--spacing-md);
    }
    
    /* Modal adjustments */
    .modal-content {
        width: 95%;
        max-height: 90vh;
        margin: var(--spacing-sm);
    }
    
    .modal-header {
        padding: var(--spacing-md);
    }
    
    .modal-header h2 {
        font-size: var(--font-size-xl);
    }
    
    .modal-body {
        padding: var(--spacing-md);
        max-height: calc(90vh - 80px);
    }
    
    /* Character creation mobile adjustments */
    .character-creation {
        padding: var(--spacing-lg);
        margin: var(--spacing-sm);
    }
    
    .creation-header h1 {
        font-size: var(--font-size-2xl);
    }
    
    .step-indicator {
        padding: 0;
        margin-bottom: var(--spacing-lg);
    }
    
    .step-indicator-item {
        font-size: var(--font-size-xs);
    }
    
    .step-indicator-item:not(:last-child)::after {
        width: 20px;
        margin: 0 var(--spacing-xs);
    }
    
    .step-number {
        width: 25px;
        height: 25px;
        font-size: var(--font-size-xs);
        margin-right: var(--spacing-xs);
    }
    
    .setting-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .setting-card {
        padding: var(--spacing-lg);
    }
    
    .setting-name {
        font-size: var(--font-size-lg);
    }
    
    .class-selection {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .class-list {
        max-height: 250px;
    }
    
    .class-item {
        padding: var(--spacing-sm);
    }
    
    .class-details {
        padding: var(--spacing-md);
    }
    
    .class-title {
        font-size: var(--font-size-xl);
    }
    
    .class-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }
    
    .stat-row {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-sm);
    }
    
    .stat-controls {
        justify-content: center;
    }
    
    .stat-btn {
        width: 35px;
        height: 35px;
        font-size: var(--font-size-base);
    }
    
    .stat-value {
        font-size: var(--font-size-xl);
        min-width: 40px;
    }
    
    .step-navigation {
        flex-direction: column;
        gap: var(--spacing-md);
        margin-top: var(--spacing-lg);
        padding-top: var(--spacing-md);
    }
    
    .nav-buttons {
        justify-content: center;
        gap: var(--spacing-sm);
    }
    
    .btn-nav {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: var(--font-size-base);
        flex: 1;
        max-width: 140px;
    }
}

/* Small Devices (landscape phones, 576px and up) */
@media (min-width: 576px) and (max-width: 767.98px) {
    .game-screen {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr auto auto;
        grid-template-areas: 
            "story"
            "character"
            "controls";
        gap: var(--spacing-lg);
    }
    
    .character-status {
        position: static;
        height: auto;
    }
    
    .stats-summary {
        grid-template-columns: repeat(6, 1fr);
    }
    
    .setting-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .class-stats {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .stat-row {
        flex-direction: row;
        text-align: left;
    }
    
    .input-container {
        flex-direction: row;
        align-items: flex-end;
    }
    
    .submit-btn {
        align-self: auto;
    }
}

/* Medium Devices (tablets, 768px and up) */
@media (min-width: 768px) and (max-width: 991.98px) {
    .game-screen {
        grid-template-columns: 2fr 1fr;
        grid-template-rows: 1fr auto;
        grid-template-areas: 
            "story character"
            "controls character";
        gap: var(--spacing-lg);
    }
    
    .character-status {
        position: sticky;
        top: calc(80px + var(--spacing-lg));
        height: fit-content;
    }
    
    .story-display {
        max-height: 50vh;
    }
    
    .setting-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .character-sheet-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .full-stats-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .skills-list {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .equipment-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Large Devices (desktops, 992px and up) */
@media (min-width: 992px) and (max-width: 1199.98px) {
    .game-screen {
        max-width: 1000px;
    }
    
    .setting-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .character-sheet-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .equipment-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Extra Large Devices (large desktops, 1200px and up) */
@media (min-width: 1200px) {
    .game-screen {
        max-width: 1200px;
    }
    
    .setting-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .equipment-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

/* ===== LANDSCAPE ORIENTATION ADJUSTMENTS ===== */
@media (orientation: landscape) and (max-height: 600px) {
    .loading-screen {
        flex-direction: row;
        text-align: left;
    }
    
    .loading-content {
        display: flex;
        align-items: center;
        gap: var(--spacing-lg);
        max-width: none;
    }
    
    .loading-dice {
        font-size: 2rem;
        margin-bottom: 0;
    }
    
    .loading-content h1 {
        font-size: var(--font-size-2xl);
        margin-bottom: var(--spacing-xs);
    }
    
    .story-display {
        max-height: 30vh;
    }
    
    .character-creation {
        padding: var(--spacing-md);
    }
    
    .creation-header {
        margin-bottom: var(--spacing-lg);
        padding-bottom: var(--spacing-sm);
    }
    
    .creation-header h1 {
        font-size: var(--font-size-2xl);
        margin-bottom: var(--spacing-sm);
    }
    
    .step-indicator {
        margin-bottom: var(--spacing-lg);
    }
}

/* ===== TOUCH DEVICE OPTIMIZATIONS ===== */
@media (hover: none) and (pointer: coarse) {
    /* Increase touch targets */
    .btn {
        min-height: 44px;
        padding: var(--spacing-md) var(--spacing-lg);
    }
    
    .nav-btn {
        min-height: 44px;
        min-width: 44px;
    }
    
    .dice-btn,
    .dice-type-btn {
        min-height: 44px;
        min-width: 44px;
    }
    
    .action-btn {
        min-height: 48px;
        padding: var(--spacing-md);
    }
    
    .modal-close {
        min-height: 44px;
        min-width: 44px;
    }
    
    .stat-btn {
        min-height: 44px;
        min-width: 44px;
    }
    
    /* Remove hover effects on touch devices */
    .btn:hover,
    .nav-btn:hover,
    .dice-btn:hover,
    .action-btn:hover,
    .setting-card:hover,
    .class-item:hover {
        transform: none;
        box-shadow: var(--box-shadow);
    }
    
    /* Add active states for touch feedback */
    .btn:active {
        transform: scale(0.98);
        background: var(--primary-light);
    }
    
    .nav-btn:active {
        transform: scale(0.98);
        background: var(--background-dark);
    }
    
    .dice-btn:active,
    .dice-type-btn:active {
        transform: scale(0.95);
    }
    
    .action-btn:active {
        transform: scale(0.98);
        background: var(--primary-dark);
    }
}

/* ===== HIGH DPI / RETINA DISPLAY OPTIMIZATIONS ===== */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .dice-face {
        border-width: 1px;
    }
    
    .loading-progress,
    .health-bar-fill {
        will-change: width;
    }
    
    .dice-3d.rolling {
        will-change: transform;
    }
}

/* ===== REDUCED MOTION PREFERENCES ===== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .dice-3d.rolling {
        animation: none;
        transform: rotateX(180deg) rotateY(180deg);
    }
    
    .loading-dice {
        animation: none;
    }
    
    .dice-icon {
        animation: none;
    }
    
    .loading-progress {
        animation: none;
        width: 100%;
    }
}

/* ===== DARK MODE SUPPORT ===== */
@media (prefers-color-scheme: dark) {
    /* Dark mode is already the default, but we can add overrides here if needed */
}

/* ===== LIGHT MODE SUPPORT ===== */
@media (prefers-color-scheme: light) {
    :root {
        --background-dark: #f8f9fa;
        --background-medium: #ffffff;
        --background-light: #e9ecef;
        
        --text-primary: #212529;
        --text-secondary: #495057;
        --text-muted: #6c757d;
        
        --border-color: #dee2e6;
        --border-light: #ced4da;
    }
    
    .dice-face {
        background: linear-gradient(135deg, #ffffff, #f8f9fa);
        color: var(--primary-dark);
        border-color: var(--primary-color);
    }
}

/* ===== PRINT STYLES ===== */
@media print {
    * {
        background: white !important;
        color: black !important;
        box-shadow: none !important;
    }
    
    .app-header,
    .controls-section,
    .character-status,
    .modal,
    .loading-screen {
        display: none !important;
    }
    
    .game-screen {
        grid-template-columns: 1fr !important;
        grid-template-areas: "story" !important;
        padding: 0 !important;
        margin: 0 !important;
        max-width: none !important;
    }
    
    .story-section {
        border: 2px solid black !important;
        border-radius: 0 !important;
        padding: 1rem !important;
        box-shadow: none !important;
        max-height: none !important;
    }
    
    .story-display {
        max-height: none !important;
        overflow: visible !important;
    }
    
    .story-content {
        font-size: 12pt !important;
        line-height: 1.4 !important;
    }
    
    .story-content p {
        margin-bottom: 0.5rem !important;
        break-inside: avoid;
    }
    
    .dice-result {
        border: 1px solid black !important;
        padding: 0.2rem 0.5rem !important;
    }
    
    /* Character creation print styles */
    .character-creation {
        page-break-inside: avoid;
        border: 2px solid black !important;
        padding: 1rem !important;
        margin: 0 !important;
    }
    
    .creation-step.active {
        display: block !important;
    }
    
    .setting-card.selected,
    .class-item.selected {
        border: 2px solid black !important;
        background: #f0f0f0 !important;
    }
}

/* ===== ACCESSIBILITY IMPROVEMENTS ===== */
@media (max-width: 767.98px) {
    /* Improve readability on small screens */
    .story-content {
        font-size: var(--font-size-lg);
        line-height: 1.7;
    }
    
    /* Ensure adequate spacing for touch targets */
    .action-btn {
        margin-bottom: var(--spacing-sm);
    }
    
    /* Make form elements easier to use on mobile */
    .form-input,
    .form-textarea,
    .form-select {
        font-size: 16px; /* Prevents zoom on iOS */
        padding: var(--spacing-lg);
    }
    
    /* Improve modal usability on mobile */
    .modal {
        padding: var(--spacing-sm);
    }
    
    .modal-content {
        border-radius: var(--border-radius);
    }
}

/* ===== CONTAINER QUERIES (Future-proofing) ===== */
/* Note: Container queries have limited support, but adding for future enhancement */
@supports (container-type: inline-size) {
    .game-screen {
        container-type: inline-size;
    }
    
    @container (max-width: 600px) {
        .story-section {
            padding: var(--spacing-md);
        }
        
        .controls-section {
            padding: var(--spacing-md);
        }
    }
}

/* ===== FOCUS MANAGEMENT FOR DIFFERENT SCREEN SIZES ===== */
@media (max-width: 767.98px) {
    *:focus {
        outline-width: 3px;
        outline-offset: 3px;
    }
    
    button:focus {
        outline-offset: 4px;
    }
}

/* ===== UTILITY CLASSES FOR RESPONSIVE DESIGN ===== */
.mobile-only {
    display: none;
}

.desktop-only {
    display: block;
}

@media (max-width: 767.98px) {
    .mobile-only {
        display: block;
    }
    
    .desktop-only {
        display: none;
    }
    
    .mobile-hide {
        display: none !important;
    }
    
    .mobile-full-width {
        width: 100% !important;
    }
    
    .mobile-text-center {
        text-align: center !important;
    }
}

@media (min-width: 768px) {
    .tablet-hide {
        display: none !important;
    }
    
    .tablet-show {
        display: block !important;
    }
}

@media (min-width: 992px) {
    .desktop-hide {
        display: none !important;
    }
    
    .desktop-show {
        display: block !important;
    }
}